This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A130997 #5 Mar 31 2012 13:21:16 %S A130997 0,1,3,2,6,7,8,4,5,16,15,14,17,18,19,20,22,13,10,21,9,12,11,43,47,44, %T A130997 40,39,42,41,37,50,46,38,45,49,48,53,52,51,54,55,60,61,62,35,33,63,34, %U A130997 26,25,56,57,64,36,27,58,23,28,32,59,24,31,29,30,136,123,124,140,137 %N A130997 Signature permutation of a Catalan automorphism: row 14 of A122288. %C A130997 Derived from automorphism *A130357 with recursion scheme KROF. %H A130997 A. Karttunen, <a href="/A130997/b130997.txt">Table of n, a(n) for n = 0..2055</a> %H A130997 <a href="/index/Per#IntegerPermutationCatAuto">Index entries for signature-permutations of Catalan automorphisms</a> %Y A130997 Inverse: A130998. %K A130997 nonn %O A130997 0,3 %A A130997 _Antti Karttunen_, Jun 20 2007